One vertex per element, one color per generator, with an edge from x to x·s.
(10,12)(14,15)(17,18,23,25)(19,24,29,30)(20,26,28,22)(21,27,31,32)(1,2)(3,6)(4,5)(7,8)(9,10,13,12)(11,15,16,14)(17,19)(18,24)(20,27)(21,22)(23,29)(25,30)(26,31)(28,32)(2,5)(6,8)(9,11,13,16)(10,14,12,15)(18,25)(19,29)(22,26)(27,32)(3,7)(6,8)(9,12,13,10)(11,15,16,14)(17,20,23,28)(18,26,25,22)(19,27,29,32)(21,24,31,30)(1,3)(2,6)(4,7)(5,8)(17,21)(18,27)(19,26)(20,30)(22,29)(23,31)(24,28)(25,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(17,22,23,26)(18,28,25,20)(19,21,29,31)(24,32,30,27)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.